| 摘要 |
PURPOSE:To reduce the number of parts by opening/closing-controlling a passage for supplying lubricating oil into a passage for introducing the pressure to a vane back pressure groove and a revolution supporting part, by using one valve body. CONSTITUTION:The suction process passage part 210 on a rear end plate 130 communicates to a discharge pressure chamber 151 through a gas passage 220. A shaft supporting part 133 communicates to a lubricating oil storage part through an oil passage 221. The gas passage 220 and the oil passage 221 are opening/closing-controlled at a same time by a valve body 250 in a case 240. Therefore, the passages can be certainly switched by shifting the valve according to the operation state of the compressor, and a selector valve can be arranged in each passage. |
